A fully enclosed, compact standard lightning impulse generator for testing ultra-high-voltage-class gas-insulated switchgears with high capacitance

被引：2

作者：

Wen, Tao ^{[1
]}

Zhang, Qiaogen ^{[1
]}

Zhang, Lingli ^{[1
]}

Zhao, Junping ^{[1
]}

Liu, Xuandong ^{[1
]}

Li, Xiaoang ^{[1
]}

Guo, Can ^{[1
]}

You, Haoyang ^{[1
]}

Chen, Weijiang ^{[2
]}

Yin, Yu ^{[3
]}

Shi, Weidong ^{[3
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China

[2] State Grid Corp China, 86 West Changan St, Beijing 100031, Peoples R China

[3] China Elect Power Res Inst, Beijing 100192, Peoples R China

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2016年 / 87卷 / 03期

关键词：

BREAKDOWN CHARACTERISTICS; SF6;

D O I：

10.1063/1.4942910

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

At present, conducting standard lightning impulse (LI) tests in the field for gas-insulated switchgear (GIS) equipment is difficult because of the high capacitance of the test equipment and large circuit inductance of traditional impulse devices, which leads to a wavefront time T-f >= 2.5 mu s. A novel fully enclosed, compact standard LI generator for testing ultra-high-voltage-class GIS equipment with high capacitance is presented to solve the problem of T-f exceeding the standard during LI voltage tests for actual large-sized equipment. The impulse generator is installed in a metal vessel filled with SF6 or SFF6/N-2 gas mixture at a pressure of 0.3-0.5 MPa, providing a more compact structure and a lower series inductance. A newly developed conical voltage sensor is used to accurately measure the output voltage waveform. Two test modes (via bushing docking and direct docking) for the GIS test based on the impulse generator are introduced. Calculation results show that the impulse generator can generate an LI test waveform following the present IEC standard for the test of equipment with capacitance > 10 000 pF. (C) 2016 AIP Publishing LLC.

引用

页数：5